It’s no secret that there’s been a shift towards minimal, low-visibility frames in architectural glazing. Demand is rising for slim aluminium systems that maximise glass area and deliver a contemporary aesthetic.
With this shift, a trend towards ‘invisible windows’ has taken place. The concept refers to windows that maximise transparency while minimising the visible frame.

Within the industry, specifiers are increasingly prioritising sightlines alongside thermal performance. BDC Aluminium windows align with contemporary architectural trends while delivering compliant performance.
The Rise of the Invisible Window
As discussed, ‘invisible windows’ maximise glass and minimise visible frame. As such, systems that fall into this category would feature slim sightlines and larger glazed panels.
This shift is driven by growing demand for daylight and contemporary architectural design. Aluminium enables structural strength with reduced profile width, making it well-suited to contemporary, minimalist designs.
Why Smart Alitherm 600 Windows Are on Trend
The Smart Alitherm 600 window is one of BDC’s most widely specified window systems. With slim aluminium profiles and larger glazed areas, it’s easy to see why.
Designed for residential and light commercial applications, it is thermally broken with our polyamide thermal break technology, delivering impressive performance. It typically delivers U-values around 1.3 W/m²K when paired with compliant glazing units.

Smart Alitherm 600 windows support the growing desire for contemporary design without sacrificing efficiency or compliance, making it a popular choice within the industry. With a wide range of powder-coated finishes and the option for bespoke RAL colours, they’re designed to suit modern projects.
Choose BDC for Your Next Commercial Project
BDC Aluminium deliver specification-ready aluminium systems aligned with the increasing demand for modern architecture. We offer excellent support for specifiers and installers alongside our desirable modern products. If you’re ready to take advantage of our services and partner with an experienced aluminium supplier, get in touch.